Questo cancellerà lapagina "If an Enemy Germ Invades You". Si prega di esserne certi.
Red blood cells, or erythrocytes, contain the hemoglobin that carries oxygen and carbon dioxide across the body. Hemoglobin provides pink blood cells their Characteristic color. When it's oxygen-rich, it appears reddish
Questo cancellerà lapagina "If an Enemy Germ Invades You". Si prega di esserne certi.